Suppose Galileo dropped a lead ball(100 kilograms)and a glass ball(1kilogram)from the leaning tower of Pisa. Which one hit the ground first?

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

Apush or pull that moves or changes and object when to objects touch